What's jarring is not even that macOS Tahoe has such weird shapes of windows. What really astonishes me is that nobody seems to have anticipated how users would try to resize windows, and did not reshape the corner drag area (which I would expect to be a quarter-circle, or a quarter-ring along the rounded edge). This can't be a mistake, this can only be deliberate cutting corners by management in order to ship ASAP. And then nobody cared to issue an update.
Verily, the last UI redesign that was based on honest research and watching real users act was WinXP.
Verily, the last UI redesign that was based on honest research and watching real users act was WinXP.